"A well regulated Militia, being necessary to the security of a free State, the right of the people to keep and bear Arms, shall not be infringed."
The militia and the right for citizens to bear arms are two separate points, just like freedom of speech and freedom of religion are two separate points of the same article.
I'm assuming you know that a militia is not the same as a military. Here's my question to you, and then I'll answer yours. How is a militia supposed to be maintained if it's been forced to forgo its guns?
"Well regulated" was put in place so the militia wouldn't turn into a group of pirates acting without the country's best interests in mind. Given that there are practically no civilian militias I'd say they've been over regulated and frowned upon by "civilized" people.
Also, why do you need so many sources to tell you what to think? Can't you just read the constitution and make your own opinions?